1. Just 4 Practice

This is the first page for practice.

1.1 First things first

Just some stuff

1.1.1This is the third header

$\left( {\frac{{dy}}{{dx}}} \right)^2 = \frac{{2r - y}}{y}.$


$\left( {\frac{{dy}}{{dx}}} \right)^2 = \frac{{2r - y}}{y}.$